The thread you linked to is inconclusive in that regard. I think someone just has to try it, and see what happens.

There are two kernels: the "flash kernel", which likely lacks LBA48 support, but which also has no need for it, so long as the "disk kernel" can be found within the first 128GB of the drive.

The "disk kernel" on the Central appears to already have LBA48 compiled in, so it should be able to use drives up to 2TB or so.

Cheers